Intermediate Algebra – Student Workbook – Second Edition 2013

Appendix A: You Try Answers
Lesson 1a
You Try Problem 8:
a) C(x) = 3.25x + 30.00
b) 0, 25
c) 30, 111.25
d)30, 46.25, 78.75, 95
e) 78.75
f) 0
g) x = 0
h) Answers vary
You Try Problem 12:
For Function F(x)
Domain: 7 x 4
Range: 6 F ( x)
7
F(0) = 2
When F(x) = 0, x = -2
For Function G(x)
Domain: 7 x 7
Range: 6 G ( x)
5
G(0) = 5
When G(x) = 0, x = -3, 3, 5.5
You Try Problem 14:
f(2) = -10, f(-3) = 5
When f(x) = 7, x = -11/3, when f(x) = -12, x = 8/3
You Try Problem 15:
a) t = time in years
b) V(t) = value in $
c) 1200, 600, 0
d) Graph should include labels for plotted points and axes. Points should be connected.
Graph should not extend beyond the starting/ending points from the table.
e) 8 years old
f) $1000
g) 0 t 12
or [0, 12]
h) 0 V ( t)
1200
or [0, 1200]
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